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  <h2 class="title">需求</h2>
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   This extension works best with GraphicsMagick version 1.4+ and PHP 5.1.3+.
   Gmagick should work with earlier versions up to GraphicsMagick 1.2.6 but
   some features and formats are not supported for these versions.
   Windows version of GraphicsMagick is available from the GraphicsMagick
   website. To read about the difference between ImageMagick and GraphicsMagick,
   check this out: <a href="http://www.graphicsmagick.org/FAQ.html#how-does-graphicsmagick-differ-from-imagemagick" class="link external">&raquo;&nbsp;FAQ</a> .
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